0.23-0.40 Cts of 4 mm AA (Slightly Included) Trillion Russian Lab Created Alexandrite (1 pc) Loose Gemstone The loose trillion-cut Russian Lab Created Alexandrite is a fine AA quality gem measuring 4x4x4 mm. Alexandrite changes color from -Green or bluish-green in daylight, to soft red, purplish-red or raspberry red in incandescent light. Lab created gemstones are developed in the lab creating the same pressure and temperature, these stones have the same chemical, physical, and optical properties as natural gemstones. 30 Day No questions asked Return Policy Free-Shipping within US Loose Russian Lab Created Alexandrite